First you Need to configure Email Notification Setup. You need to follow the below steps.
On the app’s navigation, there’s a tab of Email Notification Setup to configure the emails notifying your customers of account approval.There’s configuration to notify you of new registration too.
In the Notification section, store owners can input their email addresses to receive all communications. Click on Configure Here we will provide three email templates

1.Customer’s Request Submitted Notification: When a customer submits their form, an email is automatically sent to them, informing them that “Your account is under review.”

2.Owner’s Request Received Notification: Likewise, an email is sent to the store owner, informing them that a potential customer has submitted the form along with the customer’s details.

3.Customer’s Approval Notification: Once the form has been reviewed and the store owner changes the customer’s status from pending to approved, another email is sent to the customer.